Sorry for doubting you! I had thought it possible someone had set up a dupe-commenting bot (and like I said before, I didn't object if that was what you'd done), and was too lazy to look into whether you were a real person or only posted the dupe comments.

But speaking as a random HN reader, I appreciate comments pointing out previous discussions :) (Though I don't think it's always a negative to have a dupe on a different day)